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Finding the Fourth Proportional to 139,374.48, 192,395.66 and 94,113.76

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Solution

The fourth proportional to 139,374.48, 192,395.66 and 94,113.76 is: 129,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,374.48 : 192,395.66 = 94,113.76 : x
  2. Step 2: Convert to fraction form
    139,374.48/192,395.66 = 94,113.76/x
  3. Step 3: Cross multiply
    139,374.48x = 192,395.66 × 94,113.76
  4. Step 4: Simplify right side
    139,374.48x = 18,107,078,970.28
  5. Step 5: Solve for x
    x = 18,107,078,970.28/139,374.48
  6. Step 6: Final answer
    x = 129,916.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.